i am using sony vaio cr vgn-36 g/b .. i changed myoperating system from windows vista to windows 7 . .after that my dvd drive and memmory card reader and camera are not working what to do , , . please help
You may have to reinstall drivers for your devices. Have you tried clearing the CMOS? I couldn't find your exact model, but try the above link to see if that helps any.
One quick thing, did you update Windows to the latest service pack?